Yamaha R15 2022 Service Manual page 478

Charging method using a variable-current (volt-
age) charger
a. Measure the open-circuit voltage prior to
charging.
TIP
Voltage should be measured 30 minutes after
the engine is stopped.
b. Connect a charger and ammeter to the
battery and start charging.
TIP
Set the charging voltage to 16–17 V. If the set-
ting is lower, charging will be insufficient. If too
high, the battery will be over-charged.
c. Make sure that the current is higher than
the standard charging current written on
the battery.
TIP
If the current is lower than the standard charging
current written on the battery, set the charging
voltage adjust dial at 20–24 V and monitor the
amperage for 3–5 minutes to check the battery.
• Standard charging current is reached.
Battery is good.
• Standard charging current is not reached.
Replace the battery.
d. Adjust the voltage so that the current is at
the standard charging level.
e. Set the time according to the charging
time suitable for the open-circuit voltage.
f. If charging requires more than 5 hours, it is
advisable to check the charging current af-
ter a lapse of 5 hours. If there is any
change in the amperage, adjust the volt-
age to obtain the standard charging cur-
rent.
g. Measure the battery open-circuit voltage
after leaving the battery unused for more
than 30 minutes.
12.8 V or more --- Charging is completed.
12.7 V or less --- Recharging is required.
Under 12.0 V --- Replace the battery.
Charging method using a constant voltage
charger
a. Measure the open-circuit voltage prior to
charging.
ELECTRICAL COMPONENTS
TIP
Voltage should be measured 30 minutes after
the engine is stopped.
TIP
If the current is lower than the standard charging
current written on the battery, this type of battery
charger cannot charge the VRLA (Valve Regu-
lated Lead Acid) battery. A variable voltage
charger is recommended.
TIP
Set the charging time at 20 hours (maximum).
6. Install:
TIP
Ensure leads under the band routed properly.
Refer to "CABLE ROUTING" on page 2-31.
7. Connect:
ECA13630
First, connect the positive battery lead "1",
and then the negative battery lead "2".
8-145
b. Connect a charger and ammeter to the
battery and start charging.
c. Make sure that the current is higher than
the standard charging current written on
the battery.
d. Charge the battery until the battery's
charging voltage is 15 V.
e. Measure the battery open-circuit voltage
after leaving the battery unused for more
than 30 minutes.
12.8 V or more --- Charging is completed.
12.7 V or less --- Recharging is required.
Under 12.0 V --- Replace the battery.
• Battery
• Battery band
• Battery leads
(to the battery terminals)
1
2
ELEC – +